Method of de-aerating a high-viscosity paste charge
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-045/14
B29D-099/00
출원번호
US-0079823
(2011-04-05)
등록번호
US-8309001
(2012-11-13)
우선권정보
IL-165231 (2004-11-16)
발명자
/ 주소
Kaully, Tamar
Shacham, Dganit
Baniste, Haim
Tidhar, David
Nadiv, Corrine
출원인 / 주소
Rafael Advanced Defence Systems Ltd
대리인 / 주소
Friedman, Mark M
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A highly-filled paste, and a method and device of de-aerating and injecting the paste, the paste including: (a) a solid filler; (b) an organic binder, and (c) a residual gas, wherein the paste contains at least 80 volume-% of the solid filler and has a viscosity exceeding 100 kilopascal·seconds, whe
A highly-filled paste, and a method and device of de-aerating and injecting the paste, the paste including: (a) a solid filler; (b) an organic binder, and (c) a residual gas, wherein the paste contains at least 80 volume-% of the solid filler and has a viscosity exceeding 100 kilopascal·seconds, wherein the filler, binder, and residual gas are intimately mixed so as to form a substantially homogeneous paste, and wherein a composition of the solid filler, binder, and residual gas is selected such that the homogeneous paste has: an average density greater than 98.5% of a Theoretical Maximum Density (TMD).
대표청구항▼
1. A method of de-aerating a high-viscosity paste, the method comprising the steps of: (a) providing a device including: (i) a chamber having a feed opening for receiving a highly-filled paste feed material, said feed material having a viscosity exceeding 100 kilopascalseconds;(ii) an urging mechani
1. A method of de-aerating a high-viscosity paste, the method comprising the steps of: (a) providing a device including: (i) a chamber having a feed opening for receiving a highly-filled paste feed material, said feed material having a viscosity exceeding 100 kilopascalseconds;(ii) an urging mechanism for urging said feed material within a specified path within said chamber, and(iii) a splitting element disposed within said path of said mechanism;(b) urging the high-viscosity paste towards said splitting element, using said mechanism, so as to split said feed material into a plurality of paste streams, thereby increasing a surface area of said feed material by a factor of at least 200, and(c) de-aerating said plurality of paste streams to produce a de-aerated, high-viscosity paste. 2. The method of claim 1, wherein said surface area is increased by a factor of at least 1000. 3. The method of claim 1, wherein said surface area is increased by a factor of at least 2500. 4. The method of claim 1, wherein said surface area is increased by a factor of at least 5000. 5. The method of claim 1, wherein said de-aerated high-viscosity paste includes: (i) an explosive solid filler;(ii) a binder, and(iii) a residual gas, wherein said de-aerated high-viscosity paste contains at least 80 volume % of said solid filler, and wherein said de-aerated high-viscosity paste has an average density greater than 98.5% of a Theoretical Maximum Density (TMD). 6. The method of claim 1, wherein a viscosity of said feed material exceeds 200 kilopascalseconds. 7. The method of claim 1, wherein a viscosity of said feed material exceeds 500 kilopascalseconds. 8. The method of claim 1, wherein said de-aerated high-viscosity paste has an average density greater than 99.0% of a Theoretical Maximum Density (TMD). 9. The method of claim 1, wherein said de-aerated high-viscosity paste has an average density greater than 99.5% of a Theoretical Maximum Density (TMD). 10. The method of claim 1, wherein said de-aerated high-viscosity paste has a ratio of a local density to said average density, said ratio maintained within a range of 0.990 to 1.010, throughout said paste. 11. The method of claim 1, wherein said urging is performed by a pressure created by said urging mechanism, said pressure exceeding 30 atmospheres (absolute). 12. The method of claim 1, further comprising the steps of: (d) attaching said device to a loading apparatus containing a chargeless shaped-charge munition, and(e) performing a high-pressure injection said de-aerated, high-viscosity paste, said high-pressure injection taking place at a pressure of at least 20 atmospheres (absolute), from said device into said hollow-charge munition. 13. The method of claim 12, further comprising the step of (f) applying a vacuum to a volume of said munition so as to de-aerate said volume. 14. The method of claim 12, further comprising the step of: (f) supporting a liner of said munition during said high-pressure injection. 15. The method of claim 12, wherein said shaped-charge munition is a hollow-charge munition, the method further comprising the step of: (f) securely fixing in place a wave shaper of said hollow charge munition during said high-pressure injection.
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이 특허에 인용된 특허 (6)
Mahoney Timothy I. (Ridgecrest CA) Newman Kirk E. (Yorktown VA) Gusack James A. (Williamsburg VA) Sallade George J. (Springville IN), Apparatus for injection molding high-viscosity materials.
Newman, Kirk E.; Gusack, James A.; Mondy, Lisa A.; Graham, Alan L.; Smith, Ronald E.; Parkinson, William J., Injection loading of highly filled explosive suspensions.
Poulter Larry W. (Ogden UT) Brown John L. (Brigham City UT) Brown Ernest D. (Ogden UT), Method and apparatus for casting solid propellant rocket motors.
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